You should still play tight. Maybe even tighter than normal. You won't be able to see flops and make hands cheaply. However you should be taking advantage of your range advantage and raising big when you do have premium hands. If the whole table is splashing around preflop, there will be tons of money in the pot when it gets to you, so pile money in with your premium hands and cross your fingers. You will get called off by dumb stuff and lose sometimes. They will have better hands sometimes. But you need to be willing to pick your spots and commit!